The Rightline Gear Cargo Saddlebag is a patented cargo carrier that rests on the back of your vehicle, WITH or WITHOUT a roof rack. The rear vehicle location allows for easy loading and access to your gear, and because it produces no aerodynamic drag, it saves $$$ at the gas pump. Perfect for SUVs, minivans, and crossovers with a distance of 40a� between rear tail lights. Bottom pole frame provides structure and rigidity for bag. Purchase the Saddlebag Car Clips (sold separately) to attach to rear hatch doors on vehicles without a roof rack. Capacity: 13 cu ft Dimensions: 40a� L x 20a� W x 28a� H Rear vehicle mounting for easy loading and access to your gear, WITH or WITHOUT a roof rack Patented design produces no aerodynamic drag and saves $$$ on gas 100% waterproof with welded seams and urethane coated zipper PVC Mesh (nylon re-enforced PVC) and Hydrotuff Material (PVC-backed polyester), UV resistant Attaches to SUVs, minivans, and crossovers WITH a roof rack (either side rails or cross bars) Install on vehicles WITHOUT a roof rack with Cargo Saddlbag Car Clips (purchased separately) Bottom pole frame provides structure and rigidity for the bag Includes: Cargo Saddlebag, base frame, (1) 2a� W belt strap, (2) 1a� W bottom straps, stuff sack, and sewn-in set up guide This product ships in approximately 1 days